Kampong Chhnang weather in September

In September, Kampong Chhnang sees average daytime highs of 32°C and overnight lows near 26°C, with 234 mm of rain across 26.6 wet days and about 12.1 hours of daylight. It is the 9th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 2% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Kampong Chhnang's 12th-clearest and 12th-windiest month. For the whole year in context, see Kampong Chhnang's year-round climate.

Daytime high: 32°; 9th warmest
Overnight low: 26°; 6th coldest
Rainfall: 234 mm; 26.6 wet days
Daylight: 12 h 06 min; 5:54 AM – 5:58 PM
Cloud cover: 89%; 12th clearest
Wind: 6 km/h; 12th windiest
Solar energy: 4.63 kWh/m²
Travel score: 2.2; out of 10

Kampong Chhnang is city in Cambodia.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← August Kampong Chhnang year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Kampong Chhnang reaches about 32°C in the afternoon and slips back to 26°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, September runs on par with August and on par with October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	33	33	33	33	33	33	33	33	33	33	33	33	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32
Avg low (°C)	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	25	25	25	25	25	25	25	25	25

	Avg high (°C)	Avg low (°C)
1	33	26
2	33	26
3	33	26
4	33	26
5	33	26
6	33	26
7	33	26
8	33	26
9	33	26
10	33	26
11	33	26
12	33	26
13	32	26
14	32	26
15	32	26
16	32	26
17	32	26
18	32	26
19	32	26
20	32	26
21	32	26
22	32	25
23	32	25
24	32	25
25	32	25
26	32	25
27	32	25
28	32	25
29	32	25
30	32	25

How September really feels in Kampong Chhnang

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

30 feel dangerously hot (≥ 39°C)

Days feeling ≤ 0°C

wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Kampong Chhnang weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 1st-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	33° / 23°	10	1.8	11.4	4.3
Feb	34° / 24°	9	1.8	11.6	3.4
Mar	36° / 26°	43	6.3	11.9	2.2
Apr	36° / 27°	86	14.1	12.3	1.7
May	35° / 27°	151	22.5	12.6	1.6
Jun	34° / 26°	158	23.5	12.7	1.9
Jul	33° / 26°	166	25.6	12.6	2.1
Aug	33° / 26°	186	26.7	12.4	2.0
Sep	32° / 26°	234	26.6	12.1	2.2
Oct	32° / 25°	209	22.8	11.7	2.8
Nov	32° / 24°	71	9.8	11.4	4.0
Dec	32° / 23°	22	3.4	11.3	4.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 5% of September, with mostly cloudy or overcast conditions the remaining 93%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	6	6	6	6	5	5	5	5	5	5	5	5	5	6	6	7	8	8	8	8	8	8	8	8	8	8	8	8	8	8
Cloudier (%)	94	94	94	94	95	95	95	95	95	95	95	95	95	94	94	93	92	92	92	92	92	92	92	92	92	92	92	92	92	92

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	6	94
15	6	94
16	7	93
17	8	92
18	8	92
19	8	92
20	8	92
21	8	92
22	8	92
23	8	92
24	8	92
25	8	92
26	8	92
27	8	92
28	8	92
29	8	92
30	8	92

Chance of precipitation in September

Any precipitation

Kampong Chhnang gets around 234 mm of rain over 26.6 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 89% and peaks near 91% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	87	88	88	88	88	88	88	89	89	89	89	89	89	89	89	89	89	88	88	88	88	88	88	89	89	89	89	90	90	91

	Rain chance (%)
1	87
2	88
3	88
4	88
5	88
6	88
7	88
8	89
9	89
10	89
11	89
12	89
13	89
14	89
15	89
16	89
17	89
18	88
19	88
20	88
21	88
22	88
23	88
24	89
25	89
26	89
27	89
28	90
29	90
30	91

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the miserable band about 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Oppressive (%)	6	6	6	6	6	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	4	5	5	5	5	5	5	5
Miserable (%)	94	94	94	94	94	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	96	95	95	95	95	95	95	95

	Oppressive (%)	Miserable (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	6	94
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	5	95
18	5	95
19	5	95
20	5	95
21	5	95
22	5	95
23	4	96
24	5	95
25	5	95
26	5	95
27	5	95
28	5	95
29	5	95
30	5	95

Wind in September

Winds average 6 km/h in September, the calmest month.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	5	5	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	6	calm
2	6	calm
3	6	calm
4	6	calm
5	6	calm
6	6	calm
7	6	calm
8	6	calm
9	6	calm
10	6	calm
11	6	calm
12	6	calm
13	6	calm
14	6	calm
15	6	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	6	calm
23	6	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over September. Sunrise moves from 5:54 AM to 5:54 AM, and sunset from 6:08 PM to 5:48 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	11.9	11.9	11.9	11.9
Sunrise (AM)	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:53	5:53	5:53	5:54	5:54	5:54
Sunset (PM)	6:08	6:08	6:07	6:06	6:05	6:05	6:04	6:03	6:03	6:02	6:01	6:01	6:00	5:59	5:58	5:58	5:57	5:56	5:56	5:55	5:54	5:53	5:53	5:52	5:51	5:51	5:50	5:49	5:48	5:48

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.2	5:54	6:08
2	12.2	5:54	6:08
3	12.2	5:54	6:07
4	12.2	5:54	6:06
5	12.2	5:54	6:05
6	12.2	5:54	6:05
7	12.2	5:54	6:04
8	12.2	5:54	6:03
9	12.1	5:54	6:03
10	12.1	5:54	6:02
11	12.1	5:54	6:01
12	12.1	5:54	6:01
13	12.1	5:54	6:00
14	12.1	5:54	5:59
15	12.1	5:54	5:58
16	12.1	5:54	5:58
17	12.1	5:54	5:57
18	12.0	5:54	5:56
19	12.0	5:54	5:56
20	12.0	5:54	5:55
21	12.0	5:54	5:54
22	12.0	5:54	5:53
23	12.0	5:54	5:53
24	12.0	5:54	5:52
25	12.0	5:53	5:51
26	12.0	5:53	5:51
27	11.9	5:53	5:50
28	11.9	5:54	5:49
29	11.9	5:54	5:48
30	11.9	5:54	5:48

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.63 kWh/m².

For context, solar energy here swings from a low near 4.59 kWh/m² to a high of 6.15 kWh/m² in April across the year — September's 4.63 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	5.0	5.0	5.0	4.9	4.9	4.9	4.8	4.8	4.8	4.7	4.7	4.7	4.6	4.6	4.6	4.5	4.5	4.5	4.5	4.5	4.5	4.5	4.5	4.4	4.4	4.4	4.4	4.4	4.4	4.4
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.0	Bright
2	5.0	Bright
3	5.0	Bright
4	4.9	Bright
5	4.9	Bright
6	4.9	Bright
7	4.8	Bright
8	4.8	Bright
9	4.8	Bright
10	4.7	Bright
11	4.7	Bright
12	4.7	Bright
13	4.6	Bright
14	4.6	Bright
15	4.6	Bright
16	4.5	Bright
17	4.5	Bright
18	4.5	Bright
19	4.5	Bright
20	4.5	Bright
21	4.5	Bright
22	4.5	Bright
23	4.5	Bright
24	4.4	Bright
25	4.4	Bright
26	4.4	Bright
27	4.4	Bright
28	4.4	Bright
29	4.4	Bright
30	4.4	Bright

Planning a trip in September

Hazard calendar for Kampong Chhnang

In seasonPeak

In September, Kampong Chhnang sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Kampong Chhnang's rainy season runs May–October, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Kampong Chhnang?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.2

Sightseeing

6th-best month of the year

3.6

Beach & pool

11th-best month of the year

September is a weaker month for outdoor sightseeing in Kampong Chhnang.

What to pack for Kampong Chhnang in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Kampong Chhnang sees daytime highs around 32°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

UV index in Kampong Chhnang in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kampong Chhnang peaks around August 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 21 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	10	11	11	11	10	12	12	14	13	11	8	9
Level	Very high	Extreme	Extreme	Extreme	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	10	Very high
Feb	11	Extreme
Mar	11	Extreme
Apr	11	Extreme
May	10	Very high
Jun	12	Extreme
Jul	12	Extreme
Aug	14	Extreme
Sep	13	Extreme
Oct	11	Extreme
Nov	8	Very high
Dec	9	Very high

Air quality in Kampong Chhnang in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Kampong Chhnang is worst in February — around 42 µg/m³ PM2.5 (poor), about 2.5× the cleanest month (August, 17 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	33	42	41	34	23	19	19	17	19	21	18	18
Level	Moderate	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	33	Moderate
Feb	42	Poor
Mar	41	Poor
Apr	34	Moderate
May	23	Moderate
Jun	19	Moderate
Jul	19	Moderate
Aug	17	Moderate
Sep	19	Moderate
Oct	21	Moderate
Nov	18	Moderate
Dec	18	Moderate

Location & terrain

Where is Kampong Chhnang?

Kampong Chhnang sits at 12.3°N, 104.7°E, 21 m above sea level, in Cambodia. The nearest listed city is Kampong Thom, 57 km away.

Topography around Kampong Chhnang

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kampong Chhnang.

Within 3 km, the terrain around Kampong Chhnang has only modest variations in elevation — a maximum elevation change of 88 m around an average of 14 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 315 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,795 m.

The land around Kampong Chhnang is covered by cropland (28%), grassland (20%) and artificial surfaces (20%) within 3 km, cropland (45%) and grassland (20%) within 16 km, and cropland (52%) and trees (22%) within 80 km.

3 km

88 m

cropland 28%

16 km

315 m

cropland 45%

80 km

1,795 m

cropland 52%

treesgrasslandcroplandartificial surfacesbare terrainwaterwetland

← August Kampong Chhnang year-round climate October →Best places to visit in September

September weather nearby: Kampong Thom 57 km · Phumĭ Véal Tônsay 62 km · Chrang Chamreh Muoy 73 km · Phumĭ Tnaôt 78 km · Boeng Kak Pir 79 km · Phnom Penh 81 km · Dangkao 86 km · Pursat 87 km

Cambodia travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type A / C / G; 230 V · 50 Hz
Prices: ≈ 34% of US; price level, 2025
GDP per capita: $2,872; 2025
Happiness: 4.5 / 10; World Happiness, 2025
Safe drinking water: 30%; of population, 2024
Homicide rate: 1.8; per 100k, 2011
Road deaths: 19.6; per 100k/yr, 2019
Income group: Lower middle; World Bank
English: Very low; EF EPI 390
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Kampong Chhnang (12.25°, 104.6667°, elevation 21 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	33	26
2	33	26
3	33	26
4	33	26
5	33	26
6	33	26
7	33	26
8	33	26
9	33	26
10	33	26
11	33	26
12	33	26
13	32	26
14	32	26
15	32	26
16	32	26
17	32	26
18	32	26
19	32	26
20	32	26
21	32	26
22	32	25
23	32	25
24	32	25
25	32	25
26	32	25
27	32	25
28	32	25
29	32	25
30	32	25

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	6	94
15	6	94
16	7	93
17	8	92
18	8	92
19	8	92
20	8	92
21	8	92
22	8	92
23	8	92
24	8	92
25	8	92
26	8	92
27	8	92
28	8	92
29	8	92
30	8	92

	Rain chance (%)
1	87
2	88
3	88
4	88
5	88
6	88
7	88
8	89
9	89
10	89
11	89
12	89
13	89
14	89
15	89
16	89
17	89
18	88
19	88
20	88
21	88
22	88
23	88
24	89
25	89
26	89
27	89
28	90
29	90
30	91

	Oppressive (%)	Miserable (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	6	94
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	5	95
18	5	95
19	5	95
20	5	95
21	5	95
22	5	95
23	4	96
24	5	95
25	5	95
26	5	95
27	5	95
28	5	95
29	5	95
30	5	95

	Avg high (°C)	Avg low (°C)
1	33	26
2	33	26
3	33	26
4	33	26
5	33	26
6	33	26
7	33	26
8	33	26
9	33	26
10	33	26
11	33	26
12	33	26
13	32	26
14	32	26
15	32	26
16	32	26
17	32	26
18	32	26
19	32	26
20	32	26
21	32	26
22	32	25
23	32	25
24	32	25
25	32	25
26	32	25
27	32	25
28	32	25
29	32	25
30	32	25

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	6	94
15	6	94
16	7	93
17	8	92
18	8	92
19	8	92
20	8	92
21	8	92
22	8	92
23	8	92
24	8	92
25	8	92
26	8	92
27	8	92
28	8	92
29	8	92
30	8	92

	Rain chance (%)
1	87
2	88
3	88
4	88
5	88
6	88
7	88
8	89
9	89
10	89
11	89
12	89
13	89
14	89
15	89
16	89
17	89
18	88
19	88
20	88
21	88
22	88
23	88
24	89
25	89
26	89
27	89
28	90
29	90
30	91

	Oppressive (%)	Miserable (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	6	94
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	5	95
18	5	95
19	5	95
20	5	95
21	5	95
22	5	95
23	4	96
24	5	95
25	5	95
26	5	95
27	5	95
28	5	95
29	5	95
30	5	95

	Avg high (°C)	Avg low (°C)
1	33	26
2	33	26
3	33	26
4	33	26
5	33	26
6	33	26
7	33	26
8	33	26
9	33	26
10	33	26
11	33	26
12	33	26
13	32	26
14	32	26
15	32	26
16	32	26
17	32	26
18	32	26
19	32	26
20	32	26
21	32	26
22	32	25
23	32	25
24	32	25
25	32	25
26	32	25
27	32	25
28	32	25
29	32	25
30	32	25

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	6	94
15	6	94
16	7	93
17	8	92
18	8	92
19	8	92
20	8	92
21	8	92
22	8	92
23	8	92
24	8	92
25	8	92
26	8	92
27	8	92
28	8	92
29	8	92
30	8	92

	Rain chance (%)
1	87
2	88
3	88
4	88
5	88
6	88
7	88
8	89
9	89
10	89
11	89
12	89
13	89
14	89
15	89
16	89
17	89
18	88
19	88
20	88
21	88
22	88
23	88
24	89
25	89
26	89
27	89
28	90
29	90
30	91

	Oppressive (%)	Miserable (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	6	94
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	5	95
18	5	95
19	5	95
20	5	95
21	5	95
22	5	95
23	4	96
24	5	95
25	5	95
26	5	95
27	5	95
28	5	95
29	5	95
30	5	95